CVE-2026-66792: Incorrect Authorization in Red Hat Multicluster Global Hub
A flaw was found in the multicloud-operators-subscription component. This vulnerability allows a user on a managed cluster to escalate their privileges by creating a Subscription with specific, crafted annotations. Successful exploitation grants the attacker the ability to deploy resources into any namespace with the elevated permissions of the controller's Service Account, potentially leading to unauthorized access and control over cluster resources.
CVE-2026-66792: Incorrect Authorization in Red Hat Multicluster Global Hub
Description
A flaw was found in the multicloud-operators-subscription component. This vulnerability allows a user on a managed cluster to escalate their privileges by creating a Subscription with specific, crafted annotations. Successful exploitation grants the attacker the ability to deploy resources into any namespace with the elevated permissions of the controller's Service Account, potentially leading to unauthorized access and control over cluster resources.
CVSS v3.1
Score 9.9critical
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- redhat
- Date Reserved
- 2026-07-27T17:51:24.886Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2026-66792","vendor":"Red Hat"}]
Threat ID: 6a835271bf8831d5395f0bdf
Added to database: 08/17/2026, 18:26:57 UTC
Last updated: 08/17/2026, 18:26:57 UTC
Views: 1
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